WIP on README - first draft

redis_developer/orm/render_tree.py

@@ -1,59 +0,0 @@
-"""
-This code adapted from the library "pptree," Copyright (c) 2017 Clément Michard
-and released under the MIT license: https://github.com/clemtoy/pptree
-"""
-import io
-
-
-def render_tree(current_node, nameattr='name', left_child='left',
-                           right_child='right', indent='', last='updown',
-                           buffer=None):
-    """Print a tree-like structure, `current_node`.
-
-    This is a mostly-direct-copy of the print_tree() function from the ppbtree
-    module of the pptree library, but instead of printing to standard out, we
-    write to a StringIO buffer, then use that buffer to accumulate written lines
-    during recursive calls to render_tree().
-    """
-    if buffer is None:
-        buffer = io.StringIO()
-    if hasattr(current_node, nameattr):
-        name = lambda node: getattr(node, nameattr)
-    else:
-        name = lambda node: str(node)
-
-    up = getattr(current_node, left_child, None)
-    down = getattr(current_node, right_child, None)
-
-    if up is not None:
-        next_last = 'up'
-        next_indent = '{0}{1}{2}'.format(indent, ' ' if 'up' in last else '|', ' ' * len(str(name(current_node))))
-        render_tree(up, nameattr, left_child, right_child, next_indent, next_last, buffer)
-
-    if last == 'up':
-        start_shape = '┌'
-    elif last == 'down':
-        start_shape = '└'
-    elif last == 'updown':
-        start_shape = ' '
-    else:
-        start_shape = '├'
-
-    if up is not None and down is not None:
-        end_shape = '┤'
-    elif up:
-        end_shape = '┘'
-    elif down:
-        end_shape = '┐'
-    else:
-        end_shape = ''
-
-    print('{0}{1}{2}{3}'.format(indent, start_shape, name(current_node), end_shape),
-          file=buffer)
-
-    if down is not None:
-        next_last = 'down'
-        next_indent = '{0}{1}{2}'.format(indent, ' ' if 'down' in last else '|', ' ' * len(str(name(current_node))))
-        render_tree(down, nameattr, left_child, right_child, next_indent, next_last, buffer)
-
-    return f"\n{buffer.getvalue()}"